Delphi Launches Innovative Electric Vehicle Sounder to Be Listed in 2012
The first type is the bare pipe water wall. This is the simplest structure of the water wall. The advantage is that ordinary seamless steel pipes can be used, and it is more convenient to replace the water wall pipe. The disadvantage is that the temperature of the furnace wall is still high, and heavy refractory bricks are required. The steel frame of the corresponding boiler should be strengthened. , The air leakage of the furnace wall is relatively large. Old-fashioned high-pressure boilers and medium and small boilers are used more frequently.
The second tupe is the membrane water wall. The membrane water wall is welded by seamless steel tubes with fins. The Water Wall Tubes are connected by fins to make the water wall into a whole. This kind of water wall is called a membrane water wall. Its function is to strengthen the heat transfer of the water wall and greatly reduce the temperature of the furnace wall. The furnace wall does not need refractory bricks, but only requires thermal insulation materials. Compared with the conventional heavy furnace wall, the weight can be reduced by 60% ~ 70%, the furnace wall heat storage is reduced by 80%, the start and stop time is shortened, and the fuel consumption is reduced. The load of the furnace steel frame is greatly reduced, saving refractory materials and steel.
The third type is the pierced pipe water wall. The barbed pipe water wall pipe is made by welding many grab nails with a length of 20 to 26 mm and a diameter of 6 to 12 mm on the water wall pipe. It is mainly used to lay the gas belt. Generally, for boilers that burn fuel with low calorific value and low volatile content, in order to stabilize the fire, pierced pipe water walls are often used for laying the fire protection belt.
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Delphi's new electronic warning sounder uses a single design, weighs only one-third of the traditional multi-body design system, and the power consumption is reduced by 90%, making it the most environmentally friendly solution. Its single-box structure not only helps reduce vehicle design, testing, and manufacturing costs, its smaller size and weight can also simplify vehicle installation. The system's frequency range of 500Hz-10KHz can meet the unique melody selection of each vehicle manufacturer.
Delphi's innovative electronic warning sounder not only has the advantages of small size, light weight, low power consumption, low cost, but also features lead-free, waterproof, high temperature resistance, can withstand the high temperature and low temperature challenges in the car engine hood .
For higher quality sound requirements, Delphi also introduced a high-fidelity sound system. The system uses a conical speaker driven by a lightweight magnet and extends the lower limit of the frequency range to 150Hz. This magnet-based system weighs 66% less than conventional speaker systems.
Delphi's two systems are rugged and can be installed in harsh environments under the hood of a car, and integrate a 32-bit microprocessor with flash memory, a connector to the car's data bus, and an audio D-stage loudspeaker. .
The electric car has almost no sound during driving, which poses a safety hazard for pedestrians. With the application of hybrid vehicles and electric vehicles, various regulatory requirements have also been brought up on the agenda.
Beth Schwarting, director of Delphi's electronic control products business unit, pointed out: "Japan has incorporated regulatory warnings for hybrid and electric vehicle warning sounds, and it is expected that North American and European markets will introduce corresponding regulations soon. Delphi's goal is to Launch new low-cost, environmentally friendly technologies to help OEMs meet market challenges.â€
Deidrich von Behr, general manager of Delphi’s European electronic control products business unit, pointed out: “Delphi's new electronic sound system enhances the safety of hybrid and electric vehicles by alerting pedestrians to approach their cars, and can also be integrated into In other on-board systems, it brings higher added value to the entire vehicle customer." 
The boiler water wall is the main radiation heat surface, arranged inside the boiler chamber and proceeds the heat exchange directly with the high temperature flame. The convection tubes are the convection heat surface of the boiler, arranged between the boiler chamber outlet and the end heat surface and proceed the heat exchange directly with the high temperature fume. The water wall and convection tubes are the main heat surface of the boiler, the tubes diameter for both generally usedΦ 51-60mm boiler steel tubes, also as the request.